[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 70.973401][ T27] audit: type=1800 audit(1579123056.473:25): pid=9610 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 70.993970][ T27] audit: type=1800 audit(1579123056.483:26): pid=9610 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 71.060794][ T27] audit: type=1800 audit(1579123056.483:27): pid=9610 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 81.642088][ T9768] kasan: CONFIG_KASAN_INLINE enabled [ 81.650172][ T9768] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 81.658787][ T9768] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 81.665823][ T9768] CPU: 1 PID: 9768 Comm: syz-executor164 Not tainted 5.5.0-rc5-syzkaller #0 [ 81.674560][ T9768] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.684621][ T9768] RIP: 0010:nft_tunnel_get_init+0x65/0x2b0 [ 81.690854][ T9768] Code: 02 00 00 4c 8b 6b 08 4d 85 ed 0f 84 ba 01 00 00 e8 90 11 04 fb 49 8d 7d 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 df [ 81.710660][ T9768] RSP: 0018:ffffc900020c7398 EFLAGS: 00010247 [ 81.716719][ T9768] RAX: dffffc0000000000 RBX: ffff888099260008 RCX: ffffffff866ba44f [ 81.724876][ T9768] RDX: 0000000000000000 RSI: ffffffff8670eeb0 RDI: 0000000000000004 [ 81.733544][ T9768] RBP: ffffc900020c73c8 R08: ffff888093ba4440 R09: ffffed1015d2703d [ 81.741613][ T9768] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffff8880a2402c18 [ 81.749667][ T9768] R13: 0000000000000000 R14: 0000000000000000 R15: ffffc900020c7498 [ 81.757732][ T9768] FS: 0000000001afe880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 81.766823][ T9768] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.773404][ T9768] CR2: 00000000200009c6 CR3: 000000009012e000 CR4: 00000000001406e0 [ 81.781609][ T9768] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.789727][ T9768] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.797811][ T9768] Call Trace: [ 81.801195][ T9768] ? nft_tunnel_get_dump+0x210/0x210 [ 81.806483][ T9768] nf_tables_newrule+0xd96/0x2400 [ 81.811499][ T9768] ? nf_tables_abort+0x30/0x30 [ 81.816248][ T9768] ? nla_memcpy+0xb0/0xb0 [ 81.820574][ T9768] ? __nla_parse+0x43/0x60 [ 81.825035][ T9768] nfnetlink_rcv_batch+0xf42/0x17a0 [ 81.830232][ T9768] ? nf_tables_abort+0x30/0x30 [ 81.834998][ T9768] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 81.840805][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.847150][ T9768] ? apparmor_capable+0x497/0x900 [ 81.852369][ T9768] ? __nla_validate_parse+0x2d0/0x1ee0 [ 81.857956][ T9768] ? cap_capable+0x205/0x270 [ 81.862544][ T9768] ? nla_memcpy+0xb0/0xb0 [ 81.866935][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.873344][ T9768] ? ns_capable_common+0x93/0x100 [ 81.878362][ T9768] ? __nla_parse+0x43/0x60 [ 81.882784][ T9768] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 81.888505][ T9768] nfnetlink_rcv+0x3e7/0x460 [ 81.893093][ T9768] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 81.898562][ T9768] ? netlink_deliver_tap+0x24a/0xbf0 [ 81.903988][ T9768] ? __kasan_check_write+0x14/0x20 [ 81.909094][ T9768] netlink_unicast+0x59e/0x7e0 [ 81.913934][ T9768] ? netlink_attachskb+0x870/0x870 [ 81.919389][ T9768] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 81.925212][ T9768] ? __check_object_size+0x3d/0x437 [ 81.930408][ T9768] netlink_sendmsg+0x91c/0xea0 [ 81.935171][ T9768] ? netlink_unicast+0x7e0/0x7e0 [ 81.940116][ T9768] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 81.945658][ T9768] ? apparmor_socket_sendmsg+0x2a/0x30 [ 81.951121][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.957478][ T9768] ? security_socket_sendmsg+0x8d/0xc0 [ 81.962982][ T9768] ? netlink_unicast+0x7e0/0x7e0 [ 81.968084][ T9768] sock_sendmsg+0xd7/0x130 [ 81.972491][ T9768] ____sys_sendmsg+0x753/0x880 [ 81.977443][ T9768] ? kernel_sendmsg+0x50/0x50 [ 81.982109][ T9768] ? lockdep_init_map+0x1be/0x6d0 [ 81.987121][ T9768] ___sys_sendmsg+0x100/0x170 [ 81.991792][ T9768] ? sendmsg_copy_msghdr+0x70/0x70 [ 81.996894][ T9768] ? __kasan_check_read+0x11/0x20 [ 82.002166][ T9768] ? __lock_acquire+0x8a0/0x4a00 [ 82.007280][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.013632][ T9768] ? __this_cpu_preempt_check+0x35/0x190 [ 82.019258][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.025496][ T9768] ? percpu_counter_add_batch+0x13c/0x190 [ 82.031252][ T9768] ? __fd_install+0x1bc/0x640 [ 82.035965][ T9768] ? find_held_lock+0x35/0x130 [ 82.040783][ T9768] ? __fd_install+0x1bc/0x640 [ 82.045508][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.051872][ T9768] ? __fget_light+0x1a9/0x230 [ 82.056538][ T9768] ? __fdget+0x1b/0x20 [ 82.060601][ T9768] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 82.066963][ T9768] __sys_sendmsg+0x105/0x1d0 [ 82.071552][ T9768] ? __sys_sendmsg_sock+0xc0/0xc0 [ 82.076659][ T9768] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 82.082301][ T9768] ? do_syscall_64+0x26/0x790 [ 82.086962][ T9768] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.093030][ T9768] ? do_syscall_64+0x26/0x790 [ 82.097758][ T9768] __x64_sys_sendmsg+0x78/0xb0 [ 82.102545][ T9768] do_syscall_64+0xfa/0x790 [ 82.107032][ T9768] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.113031][ T9768] RIP: 0033:0x4407b9 [ 82.116913][ T9768] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 82.136823][ T9768] RSP: 002b:00007ffede1922c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 82.145224][ T9768] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004407b9 [ 82.153461][ T9768] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 [ 82.161423][ T9768] RBP: 00000000006ca018 R08: 0000000000000001 R09: 00000000004002c8 [ 82.169387][ T9768] R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000402040 [ 82.177351][ T9768] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 82.185417][ T9768] Modules linked in: [ 82.190445][ T9768] ---[ end trace 68c49f0316c86b67 ]--- [ 82.196004][ T9768] RIP: 0010:nft_tunnel_get_init+0x65/0x2b0 [ 82.201888][ T9768] Code: 02 00 00 4c 8b 6b 08 4d 85 ed 0f 84 ba 01 00 00 e8 90 11 04 fb 49 8d 7d 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 df [ 82.221883][ T9768] RSP: 0018:ffffc900020c7398 EFLAGS: 00010247 [ 82.228131][ T9768] RAX: dffffc0000000000 RBX: ffff888099260008 RCX: ffffffff866ba44f [ 82.236518][ T9768] RDX: 0000000000000000 RSI: ffffffff8670eeb0 RDI: 0000000000000004 [ 82.244662][ T9768] RBP: ffffc900020c73c8 R08: ffff888093ba4440 R09: ffffed1015d2703d [ 82.252821][ T9768] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffff8880a2402c18 [ 82.260872][ T9768] R13: 0000000000000000 R14: 0000000000000000 R15: ffffc900020c7498 [ 82.269137][ T9768] FS: 0000000001afe880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 82.278337][ T9768] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.285439][ T9768] CR2: 00005651166e30d0 CR3: 000000009012e000 CR4: 00000000001406f0 [ 82.293845][ T9768] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.302081][ T9768] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.310101][ T9768] Kernel panic - not syncing: Fatal exception [ 82.317793][ T9768] Kernel Offset: disabled [ 82.322142][ T9768] Rebooting in 86400 seconds..